Computer simulation of FCC riser reactors

摘要

A three-dimensional computational fluid dynamics (CFD) code, ICRKFLO, was211u001edeveloped to simulate the multiphase reacting flow system in a fluid catalytic 211u001ecracking (FCC) riser reactor. The code solve flow properties based on fundamental 211u001econservation laws of mass, momentum, and energy for gas, liquid, and solid 211u001ephases. Useful phenomenological models were developed to represent the 211u001econtrolling FCC processes, including droplet dispersion and evaporation, particle-211u001esolid interactions, and interfacial heat transfer between gas, droplets, and 211u001eparticles. Techniques were also developed to facilitate numerical calculations. 211u001eThese techniques include a hybrid flow-kinetic treatment to include detailed 211u001ekinetic calculations, a time-integral approach to overcome numerical stiffness 211u001eproblems of chemical reactions, and a sectional coupling and blocked-cell 211u001etechnique for handling complex geometry. The copyrighted ICRKFLO software has